Resources | Spring Bird Count

Resources

Spring Bird Count Reports

Since 1972, volunteers have gathered field data on birds each May. This information serves as the foundation for the Spring Bird Count reports. The data given shows which species are thriving, which are struggling, and how other factors, such as climate, habitat, and human activities, influence these patterns. Together, the reports document over fifty years of changes in Illinois’ birdlife and the habitats that support it.

Related Programs and Monitoring Efforts

Critical Trends Assessment Program (CTAP)

The Critical Trends Assessment Program monitors the condition of Illinois’ forests, wetlands, and grasslands by collecting data at more than 600 randomly selected sites statewide. Performed by the Illinois Natural History Survey with backing from the Illinois Department of Natural Resources, CTAP offers essential data on plant, bird, and arthropod communities to evaluate ecosystem health.

Learn more about the Critical Trends Assessment Program.

Illinois Audubon Society

The Illinois Audubon Society is an independent, statewide educational and scientific organization dedicated to promoting the conservation and appreciation of Illinois’ native flora and fauna, as well as the habitats that support them. IAS’s goals include raising public awareness and appreciation of birds and wildlife, supporting programs that protect and improve the natural environment, and maintaining sanctuaries throughout the state. The Society also encourages the collection of long-term data on Illinois birds as an indicator of environmental quality.

Learn more about the Illinois Audubon Society.

Monitoring of Owls and Nightjars (MOON) in Illinois

Monitoring of Owls and Nightjars (MOON) monitors nocturnal bird populations across Illinois through a volunteer-led survey from April to June. The collected species data enables scientists to identify population trends, evaluate habitat requirements, and guide conservation efforts.

Learn more about Monitoring of Owls and Nightjars in Illinois.